Riddle: I have mountains but no trees, cities but no houses,…

Riddle

im-a-type-of-dough-thats-always-on-the-go-i-flip-when

Riddle

i-have-keys-that-open-no-locks-i-have-space-but-no-room

Riddle

what-can-travel-the-world-while-staying-in-a-corner

Riddle

i-am-a-city-where-you-might-start-your-day-in-europe

Riddle

what-has-keys-but-cant-open-locks-sails-without-wind